class ActionController::Parameters

def method_missing(method_sym, *args, &block)
  if @parameters.respond_to?(method_sym)
    message = <<-DEPRECATE.squish
      Method #{method_sym} is deprecated and will be removed in Rails 5.1,
      as `ActionController::Parameters` no longer inherits from
      hash. Using this deprecated behavior exposes potential security
      problems. If you continue to use this method you may be creating
      a security vulnerability in your app that can be exploited. Instead,
      consider using one of these documented methods which are not
      deprecated: http://api.rubyonrails.org/v#{ActionPack.version}/classes/ActionController/Parameters.html
    DEPRECATE
    ActiveSupport::Deprecation.warn(message)
    @parameters.public_send(method_sym, *args, &block)
  else
    super
  end
end